Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Enhanced Photon-Pair Detection Using Phase-Sensitive Pre-amplification

James M. Dailey, Anjali Agarwal, P. Toliver, Nicholas A. Peters

Published Jan 1, 2015• 0 citations
Publisher

Abstract

We describe an experimental demonstration of fiber-based optical phase-sensitive amplification for improved detection of correlated single-photon pairs. A measured coincidence gain of 4.5dB provides 3dB improvement in the detection system signal-to-noise ratio.
DOI
10.1364/cleo_qels.2015.fth1a.4

Related papers

Enhanced Photon-Pair Detection Using Phase-Sensitive Pre-amplification

James M. Dailey

We describe an experimental demonstration of fiber-based optical phase-sensitive amplification for improved detection of correlated single-photon pairs.A measured coincidence gain of 4.5dB provides 3dB improvement in the detection system signal-to-noise ratio.

•Jul 25, 2016•0 citations

Observation of Noiseless Image Amplification by an Optical Parametric Amplifier

Sang-Kyung Choi, Michael Vasilyev, Prem Kumar

A spatially-broadband optical parametric amplifier is used for image amplification. In the phase-sensitive configuration, we observe a noise figure of −0.1± 0.3dB for a gain of 2.4, which is 2dB lower than the quantum limit for an ideal phase-insensitive amplifier. Image pre-amplification before loss is shown to improve the detected signal-to-noise ratio.

Kluwer Academic Publishers eBooks•Dec 19, 2005•1 citation

Enhancement of single-photon level signal detection based on phase sensitive amplification strategy

Changchang Zhang, Zhaolu Wang, Hongjun Liu +1 more

Abstract We investigate the ability of phase-sensitive amplification (PSA) to noiselessly amplify the preferred quadrature components of single-photon signals that are limited by phase fluctuations relative to the pump. We present a PSA enhancement strategy that is more realistic for possible experimental realization and is expected to significantly improve the detection of weak signals at the single-photon level and obtain more useful information. Our study shows that with a large PSA gain, proper transmissivity allows both direct and balanced homodyne detections to operate optimally simultaneously, and effectively improves the noise figure degradation owing to the internal losses and non-ideal detection efficiency.

New Journal of Physics•Oct 1, 2024•2 citations

Quantum-enhanced standoff detection using correlated photon pairs

Duncan G. England, Bhashyam Balaji, Benjamin Sussman

We investigate the use of correlated photon pair sources for the improved quantum-level detection of a target in the presence of a noise background. Photon pairs are generated by spontaneous four-wave mixing, one photon from each pair (the herald) is measured locally while the other (the signal) is sent to illuminate the target. Following diffuse reflection from the target, the signal photons are detected by a receiver and nonclassical timing correlations between the signal and herald are measured in the presence of a configurable background noise source. Quantum correlations from the photon pair source can be used to provide an enhanced signal-to-noise ratio when compared to a classical light source of the same intensity.

arXiv:1811.04113•Physical Review A•Feb 19, 2019•139 citations

Signal-to-Noise Ratio Enhancement in Weak Measurement, and its Application to Observing Single-Photon-Level Nonlinearities

Amir Feizpour, Xingxgin Xing, Aephraim M. Steinberg

We show theoretically that weak-value amplification can enhance the signal-to-noise ratio in the presence of noise with long correlation times, in particular for measurements of single-photon-level nonlinearities.

Conference on Lasers and Electro-Optics•Jan 1, 2012•0 citations

Optical Resolution Enhancement with Phase-Sensitive Preamplification

Oo-Kaw Lim, Gideon Alon, Zachary Dutton +3 more

We demonstrate enhanced resolution in image detection by phase-sensitive preamplification. In one-versus-two-target experiment we distinguish otherwise unresolved images with higher probability after such amplification than is possible without amplification.

Conference on Lasers and Electro-Optics•Jan 1, 2010•5 citations
Abstract We investigate the ability of phase-sensitive amplification (PSA) to noiselessly amplify the preferred quadrature components of single-photon signals that are limited by phase fluctuations relative to the pump. We present a PSA enhancement strategy that is more realistic for possible experimental realization and is expected to significantly improve the detection of weak signals at the single-photon level and obtain more useful information. Our study shows that with a large PSA gain, proper transmissivity allows both direct and balanced homodyne detections to operate optimally simultaneously, and effectively improves the noise figure degradation owing to the internal losses and non-ideal detection efficiency.
We investigate the use of correlated photon pair sources for the improved quantum-level detection of a target in the presence of a noise background. Photon pairs are generated by spontaneous four-wave mixing, one photon from each pair (the herald) is measured locally while the other (the signal) is sent to illuminate the target. Following diffuse reflection from the target, the signal photons are detected by a receiver and nonclassical timing correlations between the signal and herald are measured in the presence of a configurable background noise source. Quantum correlations from the photon pair source can be used to provide an enhanced signal-to-noise ratio when compared to a classical light source of the same intensity.